... with as many cars as they can find approved drivers for.
That's funny. I remember when at the farm, we had so many antique vehicles and equipment (and the horses and wagon), when Leonardtown had its local show, we did the same. Anyone who could drive one (that we knew, of course), could take it and follow us to the show. I think a few in our local group had the same "problem" (short on riders). The plus on that end was the guys whose trucks were still "in progress" phase, could at least participate IN the event and not just on-lookers.